Bridgeport28A1 Posted June 14, 2017 Report Share Posted June 14, 2017 I've never seen a USGI M1 Thompson with this high of serial number. It is not an XX'd out M1A1 but started life as a M1. Maybe the AOC plant in Bridgeport only had M1 bolts available on the day it serial number was rolled stamped. It serial number places it fairly late in Thompson production. http://www.subguns.com/classifieds/index.cgi?db=nfafirearms&website=&language=&session_key=&search_and_display_db_button=on&results_format=long&db_id=28982&query=retrieval Link to comment Share on other sites More sharing options...
Adg105200 Posted June 14, 2017 Report Share Posted June 14, 2017 Odd, never seen one with that high of a serial number. Wonder if the arsenal that refinished it put the L sight on it too. Way too late of a serial number for that type of sight. Andrew Link to comment Share on other sites More sharing options...
DZelenka Posted June 14, 2017 Report Share Posted June 14, 2017 The L sight rivets look correct for an AO factory installation. The SN is really high for an M1. Were serial number ranges assigned for TSMGs like they were for M1 Garands? Link to comment Share on other sites More sharing options...
Bridgeport28A1 Posted June 14, 2017 Author Report Share Posted June 14, 2017 Maybe they neglected to hand stamp the A1 for some reason or it simply left the Bridgeport plant as a M1 with the unprotected L sight. Possibly early parts on a late serial number may just be parts clean up? The sight rivets do look like Bridgeport factory installed rivets. Link to comment Share on other sites More sharing options...
azboater Posted June 14, 2017 Report Share Posted June 14, 2017 Maybe they neglected to hand stamp the A1 for some reason or it simply left the Bridgeport plant as a M1 with the unprotected L sight. Possibly early parts on a late serial number may just be parts clean up? The sight rivets do look like Bridgeport factory installed rivets. Bridgeport28A1, it is my gun, photo is hard to see the 3 looks like an 8the serial number is in the 300,000 range it was discussed here on a threadhttp://www.machinegunboards.com/forums/index.php?showtopic=18510&page=1 only selling because I have another M1 and I have my eye on another toy Link to comment Share on other sites More sharing options...
Bridgeport28A1 Posted June 14, 2017 Author Report Share Posted June 14, 2017 (edited) Serial number in the 317,XXX range would explain it. Thanks for the update! Edited June 14, 2017 by Bridgeport28A1 Link to comment Share on other sites More sharing options...
ppgcowboy Posted June 14, 2017 Report Share Posted June 14, 2017 That circle in the trigger housing, is that normal for an M1? I am referring to what looks like a stock retaining thingy? Link to comment Share on other sites More sharing options...
Adg105200 Posted June 14, 2017 Report Share Posted June 14, 2017 That circle in the trigger housing, is that normal for an M1? I am referring to what looks like a stock retaining thingy?If you are referring to the washer and screw on the buttstock, they were put on all stocks as reinforcement to keep them from splitting. Andrew Link to comment Share on other sites More sharing options...
Adg105200 Posted June 14, 2017 Report Share Posted June 14, 2017 Oh, and isn't a 300,000 serial number AOC late for a L sight? Andrew Link to comment Share on other sites More sharing options...
ppgcowboy Posted June 14, 2017 Report Share Posted June 14, 2017 I am referring to the second to last picture. I have an M1/M1a1 trigger and it does not have that. The one I have is milled without that showing. I am just wondering what a difference may be. Link to comment Share on other sites More sharing options...
1952HRA Posted June 14, 2017 Report Share Posted June 14, 2017 All original m1/m1a1 Thompson have that although that one is more visible, it is the lug that the bolt that holds the stock on is screwed into, they appear to be pressed in rather than machined like reconbobs are Link to comment Share on other sites More sharing options...
Adg105200 Posted June 14, 2017 Report Share Posted June 14, 2017 I am referring to the second to last picture. I have an M1/M1a1 trigger and it does not have that. The one I have is milled without that showing. I am just wondering what a difference may be.Oh, ok. Yes just like 1952HRA said except the two variations you will see are pinned and machined as one piece. The pinned ones you will see on the top, and the machined ones you will not. For Savage, I'm not sure what serial # they switched from pinning to machining, but on my 10,574 M1 frame and my 161,349 M1 frame they are pinned so you can see it on top. On my 203,072 M1 frame it is machined as one piece. I'm not sure for AO frames. As you can see, the pinned one is to the left in both pictures. It does seem odd that they decided to switch. You would think it would be cheaper and faster to pin later in production to save money. Andrew Link to comment Share on other sites More sharing options...
ppgcowboy Posted June 15, 2017 Report Share Posted June 15, 2017 (edited) Mine also has a GEG stamp towards the rear end. No serial number. As you can tell I am not real knowledgeable on the M1's. Thanks for answering. Edited June 16, 2017 by ppgcowboy Link to comment Share on other sites More sharing options...
shadowman Posted June 16, 2017 Report Share Posted June 16, 2017 only selling because I have another M1 and I have my eye on another toy Any reason you're selling this M1 vs the other? Link to comment Share on other sites More sharing options...
azboater Posted June 16, 2017 Report Share Posted June 16, 2017 (edited) only selling because I have another M1 and I have my eye on another toy Any reason you're selling this M1 vs the other?Yes there is, although both guns operate flawlessly and are great examples of the M1 Thompson in great condition,the one I am keeping is an Amnesty Registered Savage M1 with matching upper and lower serial #'s in the 59,000 rangewith original Black Oxide Finish exactly as it left the factory, it doesn't even have the crossbolt in the stock because it never left the States and was never refinished. Edited June 16, 2017 by azboater Link to comment Share on other sites More sharing options...
anticus Posted June 16, 2017 Report Share Posted June 16, 2017 Nice. Any recommendations on who can do this type of oxide finish ? Thinking of having my M1 SBR done. Link to comment Share on other sites More sharing options...
azboater Posted June 16, 2017 Report Share Posted June 16, 2017 Nice. Any recommendations on who can do this type of oxide finish ? Thinking of having my M1 SBR done.Anticus,Sorry, I don't, I am sure some of the much more knowledgeable Board members will chime in on that one Link to comment Share on other sites More sharing options...
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